有恒星日滤波模型的MATLAB代码吗

以下是用MATLAB编写的一种恒星日滤波模型的代码。该模型使用了三个不同的滤波器来消除不同的干扰信号，包括太阳引力波、大气膨胀和地球磁场干扰。

function [filtered_data] = stellar_day_filter(data, fs)
    % Stellar Day Filter Model
    % Inputs:
    %   data: input signal (1D vector)
    %   fs: sampling frequency (Hz)
    % Outputs:
    %   filtered_data: filtered signal (1D vector)
    
    % Define constants
    f_s = 1/86164; % Stellar day frequency (Hz)
    f_gw = 2*f_s; % Gravitational wave frequency (Hz)
    f_iono = 1/5400; % Ionospheric frequency (Hz)
    f_mag = 1/86400; % Geomagnetic frequency (Hz)
    
    % Design filters
    b1 = fir1(1000, [f_s-0.1*f_s f_s+0.1*f_s]/(fs/2)); % Stellar day filter
    b2 = fir1(1000, [f_gw-0.1*f_gw f_gw+0.1*f_gw]/(fs/2)); % Gravitational wave filter
    b3 = fir1(1000, [f_iono-0.1*f_iono f_iono+0.1*f_iono]/(fs/2)); % Ionospheric filter
    b4 = fir1(1000, [f_mag-0.1*f_mag f_mag+0.1*f_mag]/(fs/2)); % Geomagnetic filter
    
    % Apply filters
    filtered_data1 = filter(b1, 1, data); % Apply stellar day filter
    filtered_data2 = filter(b2, 1, filtered_data1); % Apply gravitational wave filter
    filtered_data3 = filter(b3, 1, filtered_data2); % Apply ionospheric filter
    filtered_data = filter(b4, 1, filtered_data3); % Apply geomagnetic filter
end

该代码使用了MATLAB内置的fir1函数来设计滤波器，并使用filter函数来应用这些滤波器。函数的输入是一个1D向量数据和采样频率，输出是一个经过三个滤波器处理的、消除了太阳引力波、大气膨胀和地球磁场干扰的新信号。